Process for the purification of vinyl chloride polymers (PVC) from heavy metals
    1.
    发明授权
    Process for the purification of vinyl chloride polymers (PVC) from heavy metals 失效
    从重金属中纯化氯乙烯聚合物(PVC)的方法

    公开(公告)号:US07759458B2

    公开(公告)日:2010-07-20

    申请号:US11719714

    申请日:2005-11-21

    IPC分类号: C08F6/00 C08J3/00

    摘要: A process for the purification of a vinyl chloride polymer containing a compound of a heavy metal by: (a) dissolving the PVC in a solvent; (b) treating the solution with at least one additive capable of adsorbing or of forming a complex with the compound of the heavy metal; (c) centrifuging the treated solution to precipitate the adsorbed or complexed compound of the heavy metal; and (d) separating the precipitate from the PVC solution.

    摘要翻译: 一种通过以下方法纯化含有重金属化合物的氯乙烯聚合物的方法:(a)将PVC溶解在溶剂中; (b)用至少一种可与重金属化合物吸附或形成配合物的添加剂处理该溶液; (c)离心处理的溶液以沉淀重金属的吸附或络合的化合物; 和(d)从PVC溶液中分离出沉淀物。